r^2-9=-12

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Solution for r^2-9=-12 equation:


Simplifying
r2 + -9 = -12

Reorder the terms:
-9 + r2 = -12

Solving
-9 + r2 = -12

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '9' to each side of the equation.
-9 + 9 + r2 = -12 + 9

Combine like terms: -9 + 9 = 0
0 + r2 = -12 + 9
r2 = -12 + 9

Combine like terms: -12 + 9 = -3
r2 = -3

Simplifying
r2 = -3

Reorder the terms:
3 + r2 = -3 + 3

Combine like terms: -3 + 3 = 0
3 + r2 = 0

The solution to this equation could not be determined.

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